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<span class="Comment">//: Containers contain a fixed number of elements of different types.</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
<span class="Comment">//: We'll use this container as a running example, with two number elements.</span>
type_number point = Type_number[<span class="Constant">"point"</span>] = Next_type_number++<span class="Delimiter">;</span>
Type[point]<span class="Delimiter">.</span>size = <span class="Constant">2</span><span class="Delimiter">;</span>
Type[point]<span class="Delimiter">.</span>kind = container<span class="Delimiter">;</span>
Type[point]<span class="Delimiter">.</span>name = <span class="Constant">"point"</span><span class="Delimiter">;</span>
vector<type_number> i<span class="Delimiter">;</span>
i<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>number<span class="Delimiter">);</span>
Type[point]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
Type[point]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Comment">//: Containers can be copied around with a single instruction just like</span>
<span class="Comment">//: numbers, no matter how large they are.</span>
<span class="Delimiter">:(scenario copy_multiple_locations)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">3</span>:point<span class="Special"> <- </span>copy <span class="Constant">1</span>:point
]
<span class="traceContains">+run: ingredient 0 is 1</span>
<span class="traceContains">+mem: location 1 is 34</span>
<span class="traceContains">+mem: location 2 is 35</span>
<span class="traceContains">+mem: storing 34 in location 3</span>
<span class="traceContains">+mem: storing 35 in location 4</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
<span class="Comment">// A more complex container, containing another container as one of its</span>
<span class="Comment">// elements.</span>
type_number point_number = Type_number[<span class="Constant">"point-number"</span>] = Next_type_number++<span class="Delimiter">;</span>
Type[point_number]<span class="Delimiter">.</span>size = <span class="Constant">2</span><span class="Delimiter">;</span>
Type[point_number]<span class="Delimiter">.</span>kind = container<span class="Delimiter">;</span>
Type[point_number]<span class="Delimiter">.</span>name = <span class="Constant">"point-number"</span><span class="Delimiter">;</span>
vector<type_number> p2<span class="Delimiter">;</span>
p2<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>point<span class="Delimiter">);</span>
Type[point_number]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>p2<span class="Delimiter">);</span>
vector<type_number> i2<span class="Delimiter">;</span>
i2<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>number<span class="Delimiter">);</span>
Type[point_number]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>i2<span class="Delimiter">);</span>
<span class="Delimiter">:(scenario copy_handles_nested_container_elements)</span>
recipe main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">14</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">15</span>:point-number<span class="Special"> <- </span>copy <span class="Constant">12</span>:point-number
]
<span class="traceContains">+mem: storing 36 in location 17</span>
<span class="Comment">//: Containers can be checked for equality with a single instruction just like</span>
<span class="Comment">//: numbers, no matter how large they are.</span>
<span class="Delimiter">:(scenario compare_multiple_locations)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal <span class="Comment"># first</span>
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal <span class="Comment"># second</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">7</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:point-number<span class="Delimiter">,</span> <span class="Constant">4</span>:point-number
]
<span class="traceContains">+mem: storing 1 in location 7</span>
<span class="Delimiter">:(scenario compare_multiple_locations2)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal <span class="Comment"># first</span>
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal <span class="Comment"># second</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">37</span>:literal <span class="Comment"># different</span>
<span class="Constant">7</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:point-number<span class="Delimiter">,</span> <span class="Constant">4</span>:point-number
]
<span class="traceContains">+mem: storing 0 in location 7</span>
<span class="Delimiter">:(before "End size_of(types) Cases")</span>
type_info t = Type[types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>]<span class="Delimiter">;</span>
if <span class="Delimiter">(</span>t<span class="Delimiter">.</span>kind == container<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// size of a container is the sum of the sizes of its elements</span>
size_t result = <span class="Constant">0</span><span class="Delimiter">;</span>
for <span class="Delimiter">(</span>index_t i = <span class="Constant">0</span><span class="Delimiter">;</span> i < t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>size<span class="Delimiter">();</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
result += size_of<span class="Delimiter">(</span>t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="SalientComment">//:: To access elements of a container, use 'get'</span>
<span class="Delimiter">:(scenario get)</span>
recipe main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">15</span>:number<span class="Special"> <- </span>get <span class="Constant">12</span>:point<span class="Delimiter">,</span> <span class="Constant">1</span>:offset
]
<span class="traceContains">+run: instruction main/2</span>
<span class="traceContains">+run: ingredient 0 is 12</span>
<span class="traceContains">+run: ingredient 1 is 1</span>
<span class="traceContains">+run: address to copy is 13</span>
<span class="traceContains">+run: its type is 1</span>
<span class="traceContains">+mem: location 13 is 35</span>
<span class="traceContains">+run: product 0 is 15</span>
<span class="traceContains">+mem: storing 35 in location 15</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
GET<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
Recipe_number[<span class="Constant">"get"</span>] = GET<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
case GET: <span class="Delimiter">{</span>
reagent base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
index_t base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
type_number base_type = base<span class="Delimiter">.</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>kind == container<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>isa_literal<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)));</span>
assert<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>size<span class="Delimiter">()</span> == <span class="Constant">1</span><span class="Delimiter">);</span> <span class="Comment">// scalar</span>
index_t offset = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
index_t src = base_address<span class="Delimiter">;</span>
for <span class="Delimiter">(</span>index_t i = <span class="Constant">0</span><span class="Delimiter">;</span> i < offset<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
src += size_of<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
trace<span class="Delimiter">(</span><span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"address to copy is "</span> << src<span class="Delimiter">;</span>
assert<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>kind == container<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>size<span class="Delimiter">()</span> > offset<span class="Delimiter">);</span>
type_number src_type = Type[base_type]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>offset<span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"its type is "</span> << src_type<span class="Delimiter">;</span>
reagent tmp<span class="Delimiter">;</span>
tmp<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>src<span class="Delimiter">);</span>
tmp<span class="Delimiter">.</span>types<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>src_type<span class="Delimiter">);</span>
products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>tmp<span class="Delimiter">));</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">//: 'get' requires a literal in ingredient 1. We'll use a synonym called</span>
<span class="Comment">//: 'offset'.</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
Type_number[<span class="Constant">"offset"</span>] = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">:(scenario get_handles_nested_container_elements)</span>
recipe main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">14</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">15</span>:number<span class="Special"> <- </span>get <span class="Constant">12</span>:point-number<span class="Delimiter">,</span> <span class="Constant">1</span>:offset
]
<span class="traceContains">+run: instruction main/2</span>
<span class="traceContains">+run: ingredient 0 is 12</span>
<span class="traceContains">+run: ingredient 1 is 1</span>
<span class="traceContains">+run: address to copy is 14</span>
<span class="traceContains">+run: its type is 1</span>
<span class="traceContains">+mem: location 14 is 36</span>
<span class="traceContains">+run: product 0 is 15</span>
<span class="traceContains">+mem: storing 36 in location 15</span>
<span class="SalientComment">//:: To write to elements of containers, you need their address.</span>
<span class="Delimiter">:(scenario get_address)</span>
recipe main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>:literal
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">15</span>:address:number<span class="Special"> <- </span>get-address <span class="Constant">12</span>:point<span class="Delimiter">,</span> <span class="Constant">1</span>:offset
]
<span class="traceContains">+run: instruction main/2</span>
<span class="traceContains">+run: ingredient 0 is 12</span>
<span class="traceContains">+run: ingredient 1 is 1</span>
<span class="traceContains">+run: address to copy is 13</span>
<span class="traceContains">+mem: storing 13 in location 15</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
GET_ADDRESS<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
Recipe_number[<span class="Constant">"get-address"</span>] = GET_ADDRESS<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
case GET_ADDRESS: <span class="Delimiter">{</span>
reagent base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
index_t base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
type_number base_type = base<span class="Delimiter">.</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>kind == container<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>isa_literal<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)));</span>
assert<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>size<span class="Delimiter">()</span> == <span class="Constant">1</span><span class="Delimiter">);</span> <span class="Comment">// scalar</span>
index_t offset = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
index_t result = base_address<span class="Delimiter">;</span>
for <span class="Delimiter">(</span>index_t i = <span class="Constant">0</span><span class="Delimiter">;</span> i < offset<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
result += size_of<span class="Delimiter">(</span>Type[base_type]<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
trace<span class="Delimiter">(</span><span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"address to copy is "</span> << result<span class="Delimiter">;</span>
products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="SalientComment">//:: Allow containers to be defined in mu code.</span>
<span class="Delimiter">:(scenarios load)</span>
<span class="Delimiter">:(scenario container)</span>
container foo [
x:number
y:number
]
<span class="traceContains">+parse: reading container foo</span>
<span class="traceContains">+parse: element name: x</span>
<span class="traceContains">+parse: type: 1</span>
<span class="traceContains">+parse: element name: y</span>
<span class="traceContains">+parse: type: 1</span>
<span class="Delimiter">:(before "End Command Handlers")</span>
else if <span class="Delimiter">(</span>command == <span class="Constant">"container"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
insert_container<span class="Delimiter">(</span>command<span class="Delimiter">,</span> container<span class="Delimiter">,</span> in<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
void insert_container<span class="Delimiter">(</span>const string& command<span class="Delimiter">,</span> kind_of_type kind<span class="Delimiter">,</span> istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
skip_whitespace<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
string name = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">"reading "</span> << command << <span class="Constant">' '</span> << name<span class="Delimiter">;</span>
<span class="CommentedCode">//? cout << name << '\n'; //? 2</span>
<span class="CommentedCode">//? if (Type_number.find(name) != Type_number.end()) //? 1</span>
<span class="CommentedCode">//? cerr << Type_number[name] << '\n'; //? 1</span>
if <span class="Delimiter">(</span>Type_number<span class="Delimiter">.</span>find<span class="Delimiter">(</span>name<span class="Delimiter">)</span> == Type_number<span class="Delimiter">.</span>end<span class="Delimiter">()</span>
|| Type_number[name] == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
Type_number[name] = Next_type_number++<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
skip_bracket<span class="Delimiter">(</span>in<span class="Delimiter">,</span> <span class="Constant">"'container' must begin with '['"</span><span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>Type<span class="Delimiter">.</span>find<span class="Delimiter">(</span>Type_number[name]<span class="Delimiter">)</span> == Type<span class="Delimiter">.</span>end<span class="Delimiter">());</span>
type_info& t = Type[Type_number[name]]<span class="Delimiter">;</span>
recently_added_types<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>Type_number[name]<span class="Delimiter">);</span>
t<span class="Delimiter">.</span>name = name<span class="Delimiter">;</span>
t<span class="Delimiter">.</span>kind = kind<span class="Delimiter">;</span>
while <span class="Delimiter">(</span>!in<span class="Delimiter">.</span>eof<span class="Delimiter">())</span> <span class="Delimiter">{</span>
skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
string element = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>element == <span class="Constant">"]"</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
istringstream inner<span class="Delimiter">(</span>element<span class="Delimiter">);</span>
t<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>slurp_until<span class="Delimiter">(</span>inner<span class="Delimiter">,</span> <span class="Constant">':'</span><span class="Delimiter">));</span>
trace<span class="Delimiter">(</span><span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">" element name: "</span> << t<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>back<span class="Delimiter">();</span>
vector<type_number> types<span class="Delimiter">;</span>
while <span class="Delimiter">(</span>!inner<span class="Delimiter">.</span>eof<span class="Delimiter">())</span> <span class="Delimiter">{</span>
string type_name = slurp_until<span class="Delimiter">(</span>inner<span class="Delimiter">,</span> <span class="Constant">':'</span><span class="Delimiter">);</span>
if <span class="Delimiter">(</span>Type_number<span class="Delimiter">.</span>find<span class="Delimiter">(</span>type_name<span class="Delimiter">)</span> == Type_number<span class="Delimiter">.</span>end<span class="Delimiter">())</span>
raise << <span class="Constant">"unknown type "</span> << type_name << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
types<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>Type_number[type_name]<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">" type: "</span> << types<span class="Delimiter">.</span>back<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>types<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
assert<span class="Delimiter">(</span>t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>size<span class="Delimiter">()</span> == t<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>size<span class="Delimiter">());</span>
t<span class="Delimiter">.</span>size = t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>size<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Comment">//: ensure types created in one scenario don't leak outside it.</span>
<span class="Delimiter">:(before "End Globals")</span>
vector<type_number> recently_added_types<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End load_permanently")</span> <span class="Comment">//: for non-tests</span>
recently_added_types<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Delimiter">:(before "End Setup")</span> <span class="Comment">//: for tests</span>
for <span class="Delimiter">(</span>index_t i = <span class="Constant">0</span><span class="Delimiter">;</span> i < recently_added_types<span class="Delimiter">.</span>size<span class="Delimiter">();</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="CommentedCode">//? cout << "erasing " << Type[recently_added_types.at(i)].name << '\n'; //? 1</span>
Type_number<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>Type[recently_added_types<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span>]<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
Type<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>recently_added_types<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
recently_added_types<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Comment">//: lastly, ensure scenarios are consistent by always starting them at the</span>
<span class="Comment">//: same type number.</span>
Next_type_number = <span class="Constant">1000</span><span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Test Run Initialization")</span>
assert<span class="Delimiter">(</span>Next_type_number < <span class="Constant">1000</span><span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Setup")</span>
Next_type_number = <span class="Constant">1000</span><span class="Delimiter">;</span>
<span class="SalientComment">//:: helpers</span>
<span class="Delimiter">:(code)</span>
void skip_bracket<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> string message<span class="Delimiter">)</span> <span class="Delimiter">{</span>
skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">()</span> != <span class="Constant">'['</span><span class="Delimiter">)</span>
raise << message << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
</pre>
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